python–pip install pickle not working– 没有这样的文件或目录

A common pattern in Python 2.x is to have one version of a module implemented in pure Python,with an optional accelerated version implemented as a C extension; for example,pickle and cPickle.

This places the burden of importing the accelerated version and falling back on the pure Python version on each user of these modules. In Python 3.0,the accelerated versions are consIDered implementation details of the pure Python versions.

Users should always import the standard version,which attempts to import the accelerated version and falls back to the pure Python version. The pickle / cPickle pair received this treatment. The profile module is on the List for 3.1. The StringIO module has been turned into a class in the io module.

这意味着在python3中它作为一个库…

import _pickle as cPickle

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